Clean Facilities

O · PARK2

For more information about O·PARK2, please click here.

As the impacts of climate change and the effects of extreme weather become more pronounced, carbon neutrality has been placed on the development agenda globally, as well as in China. Buildings account for more than half of China’s carbon emissions over their life cycle and play a pivotal role in achieving the carbon neutrality target.

The Group is actively facing the challenges of low carbon transition, actively exploring the carbon neutral and development path, seizing the opportunities of industrial upgrading, responding to the expectations of the general public, and working together to cope with the climate change. As a construction contractor, we are committed to reducing carbon emissions from the construction process, taking responsibility for emission reduction, accumulating low-carbon construction technologies and experiences to build competitive advantages, and promoting the adoption of lower carbon-friendly building design and construction materials in the industry chain to lead the industry toward a lower carbon future.

In this context, the Group has decided to use the Hong Kong market as a starting point to establish a governance framework for carbon neutral and carbon asset development in CSHK, including both decision-making and execution levels. In this way, the senior management, together with subsidiaries and functional departments, can work together to coordinate and take charge of the low carbon construction.


The Group has taken into account the life cycle carbon emissions of the building in all aspects, including design, materials, engineering construction, and operational maintenance. The CSHK has also decided to take the Organic Resources Recovery Centre Phase 2 (O・PARK2) project as the first pilot example to implement carbon neutrality during construction phase. The Group is committed to making O・PARK2 the first project in China to achieve carbon neutrality during construction period, setting an exemplary benchmark for the sustainable development in the construction industry.

The largest food waste recycling center in Hong Kong is an important part of the "Hong Kong Resource Recycling Blueprint 2035" to establish a circular economy. The project puts environmental protection, multi-technology and education together. Advanced biotechnology is used to convert food waste into electricity, marking a milestone of converting waste into energy in Hong Kong. O · PARK2 is the first EPD government project as well as the first food waste recycling and processing environmental protection project undertaken by CSHK. It is also the first DBO project where CSHK participates in the operation and management.

Hong Kong disposes of around 1,000 tonnes of organic waste that comes from the catering industry, and food manufacturing and processing industry each day. This not only takes up precious landfill space, but also produces landfill gases and leachate, imposing long term burden for the environment. O · PARK2 situates at the Sha Ling Livestock Waste Control Centre in North District, covering 2.5 hectares. The project plans to adopt biological treatment technology of anaerobic decomposition compost machine, converting food waste and organic waste into biogas used for power generation or gas, and the digestate can become farming compost. After the completion of the project, it is estimated that the facility is capable of receiving and processing approximately 300 tonnes source-separated organic waste each day, assisting in the easing of food waste problems in Sheung Shui and the North District.


Project Design and Construction Incorporates the Concept of Sustainable Development

The O・PARK2, located in Sha Ling, North District, is a commercial and industrial organic waste recycling facility developed by the Hong Kong Environmental Protection Department as part of the plan to establish a food waste recycling network in Hong Kong, as part of the HKSAR Government’s waste management policy. A joint venture between CSHK and its partners has been awarded the design, construction and operation contract for O・PARK2, including a 15-year operation period. O・PARK2 will use anaerobic digestion technology to convert food waste into biogas for power generation and will process the treated residue into fertilizer.

  • Through sophisticated BIM design and the introduction of advanced foreign food waste treatment technology, O・PARK2 can handle 300 tons of organic waste per day on a mere 2.5 hectares of land.
  • Maintaining 40% of the original plant on site and replanting trees throughout the slope area;
  • To increase the green area to 50%, we will build gardens and urban farms on the roof of buildings to integrate the buildings into the surroundings and reduce the impact on landscape.
  • Installed and adopted the CLP’s battery energy storage system (BESS) to replace conventional diesel generators, reducing the use of diesel and a..chieving reductions of emissions and greenhouse gas.
  • The site purchased four electric vehicles to replace petrol vehicles, reducing greenhouse gas emissions and improving roadside air quality.
  • Use of energy-saving appliances and equipments, installation of energy-saving prompts and lighting with motion sensors in the site office, and installation of sustainable energy facilities such as solar power panels.
  • Solar power panels will be installed upon completion of the project, and an intelligent system will be used to monitor daily electricity consumption and power generation.
  • Design with BIM to optimize anaerobic cylinder structure and reduce the concrete usage by 22.5%;
  • Replace wooden templates with reusable templates to reduce the use of timber;
  • Digitize construction sites via paperless meetings and site inspections to reduce paper use;
  • Use a well-established sewage treatment system to treat construction sewage and reuse a portion of the water used for washing vehicles, saving approximately 36,500 liters of water per year.
  • The installation of flush-free urinals in the Falcon Waterfree Urinals on-site toilets can save up to 151,000 liters of water annually;
  • Upon the project’s completion, the sewage treatment system will provide 294,500 liters of reclaimed water per day for daily cleaning as well as process water.
  • Collect rainwater and recycle the treated wastewater for plant irrigation, which can save 82.4% of irrigation water.

Enhanced Carbon-Related Disclosure

The Group has been publishing and disclosing the performance of sustainable development through sustainable development reports and websites. The Group will continue to share the findings of O・ PARK2 carbon neutrality pilot project in the Sustainable Development Report and on the project website to promote the low carbon transformation of the construction industry.

To further enhance information disclosure, the Group has undertaken the following actions:

  • Build an on-premises sustainable data cloud platform that addresses information and data collection and storage challenges, and consolidate ESG data across sites and offices to improve data accuracy;
  • Self-developed carbon neutrality cloud platform to collect and demonstrate the carbon emission levels of the OŸPARK2 pilot projects and to enable the electronic carbon verification process;
  • Monthly updates on the platform on GHG emissions, distribution and effectiveness of carbon reduction measures for sites and offices;
  • It helps the decision-makers to grasp the real-time carbon emissions of the Group, so as to formulate corresponding countermeasures and serve as the basis for the development, trading and management of carbon assets in the future.

Desalination Plant

As a main contractor of construction projects, CSHK is committed to enhancing the environmental performances of construction projects and coordinating the efforts of all parties to minimise the negative environmental impact.

Tseung Kwan O Desalination Plant

A reliable water supply is essential to sustainable development and economic growth in Hong Kong. In the past, the continuous population and economic growth in Hong Kong have led to an increase in water demand, coupled with extreme weather conditions caused by climate change, as well as the tight supply of Dongjiang water due to the rapid development of the Pearl River Delta, the Hong Kong government has implemented the Total Water Management Strategy for the active development of new water sources and has planned to build the first phase of a desalination plant in the 137 district of Tseung Kwan O.

The Hong Kong Water Supplies Department granted the first stage of DBO contracts, which was successfully tendered by the AJC Joint Venture jointly formed by CSHK, Jardine Engineering Corporation, and Acciona Agua SA, a Spanish desalination contractor with extensive international experiences. The design and construction work commenced in December 2019 with a contract operation period of 10 years. The project is expected to begin operation in 2023 and will produce 0.135 million cubic metres of fresh water per day, meeting approximately 5% of Hong Kong’s daily fresh water demand and safeguarding Hong Kong’s fresh water supply.

Adopting reverse osmosis desalination technology

With the flexibility provided by the DBO model, we have adopted the advanced reverse osmosis desalination technology in this project. The technology does not subject to the impact caused by climate change and is expected to provide a stable supply of fresh water, making the facilities more environmentally friendly. At the same time. The unit water production cost of this technology is comparable to the current unit water production cost after excluding the distribution and customer services costs, and thus will not pose a significant extra burden to the public, further contributing to a sustainable environment for the community.

Adopting sustainable designs and innovative construction methods

We have adopted different sustainable designs in this project and introduced innovative technologies to enhance productivity, reduce wastage, and improve cost-effectiveness.

  • The foundation structure has been redesigned to adopt the simple “raft foundation”, replacing the original design of pile foundation
  • DfMA and MiC technology has been adopted to build the site office, which can be reused after dismantling at the end of the project

Apart from introducing advanced technologies to improve Hong Kong’s environmental issues and enhance efficiency, we have carried out the design, construction, and operation of each project stage in accordance with the highest sustainability standards generally recognised in Hong Kong – BEAM Plus Platinum Rating.

Sewage Treatment Works

The company is committed to promoting low-carbon construction, protecting the environment, and practicing sustainable development while developing.

Works of the Relocation of Sha Tin Sewage Treatment Works to Caverns

Environmental monitoring:
Real-time measurement and display of the level of noise and air quality.
Noise mitigation measures:
Erection of noise curtains at tunnel entrances and noise barrier outside tunnels to reduce the noise impact of tunnel works.

Dust control:
Automatic water spraying system for the control of dust and air quality enhancement.

Reduce the emission of greenhouse gas:
Extensive use of B5 biodiesel in construction machinery and pioneering the use of B100 biodiesel for electricity supply to site offices.

Use of renewable energy:
Use of solar lamp poles.

Use of electrical appliances that utilise solar and wind energy.

Improve air quality:
Use of hybrid/electric vehicles to reduce air emissions arising from the combustion of vehicle fuel.

Waste reuse:
  • Reuse of used plastic bottles for planting.
  • Modification of wastewater drainage pipe into an air-conditioned workers’ lounge.